[PD] my first extension, FINISHED

[Frank Barknecht]

Hallo,
Atte André Jensen hat gesagt: // Atte André Jensen wrote:

> I managed to finish my first extension (even while I haven't got a clue 
> what pd is up to:-)).

We call these things "externals" around here. ;) 

> It simply transforms output from notein to legato after these simple 
> rules: left output: the last note that was pressed. 

It doesn't seem to do this all the time. With some wild clicking on
attached patch I can make it send a "0" to the first inlet as well,
although no note 0 was ever sent. If it's in that state, also no
velocity output is generate anymore.

> right output: 0 if no notes are pressed other wise the velocity of
> the first played note.  If you played a monophonic hardware synth,
> you'll understand my poor explanation...

One thing that IMO should accompany every Pd external is a help patch.
Just make a file NAMEOFEXTERNAL-help.pd (legato-help.pd) that shows
and explains what your object does, what the inlets accept and what
the outlets will produce. Ideally you'd make a little example of the
object in use as well. help-patches are a good way to test objects as
well.

> Now, I have a couple of questions, just to round this off:
> 
> 1) The makefile is the one IOhannes pointed me towards([1]), but with 
> PDROOT hardcoded to "/home/atte/software/pd/current/". Isn't there a 
> more elegant way so that someone trying to build it will have to edit 
> the makefile?

I didn't need to edit the Makefile at all on Linux, however I did
change #include "m_pd.h" to #include <m_pd.h> (see another thread
here). If m_pd.h is in a system include path, all the PDROOT stuff is
unnecessary to build the class.

> 2) It doesn't like to receive a bang (basically anything but float). It 
> doesn't really make much sense to send it a float, but would it be nicer 
> to handle this in some way? Right now it just prints "no method for 
> 'bang'" in the pd window...

That's okay: If an object is not supposed to deal with "bang" than
that's how that object is supposed to be and printing the
error/warning to the console is fine. 

> 4) Should I put it up somewhere, for instance on my servers svn-repo?

puredata.info would be a good place as well. Or I would volunteer to
add it to the Sourceforge-CVS. 

Ciao
-- 
 Frank Barknecht                 _ ______footils.org_ __goto10.org__
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